Elbert Hubbard said this quote

“ Business, to be successful, must be based on science, for demand and supply are matters of mathematics, not guesswork. ”

Famous Quotes of Elbert Hubbard

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A friend is someone who knows all about you and still loves you.

~ Elbert Hubbard

Do not take life too seriously. You will never get out of it alive.

~ Elbert Hubbard

The world is moving so fast these days that the man who says it can't be done is generally interrupted by someone doing it.

~ Elbert Hubbard

Every man is a damn fool for at least five minutes every day, wisdom consists in not exceeding the limit.

~ Elbert Hubbard